6. Concluding remarks
As a way of implementing sustainability within the construction industry, GBTs adoption has received a high level of global attention in recent times. However, GBTs adoption in the developing country of Ghana is still in its infancy and facing numerous barriers. These barriers need to be addressed in order to facilitate the successful and widespread adoption of GBTs. To this end, this study aimed to investigate the critical barriers to GBTs adoption in Ghana. To achieve the aim, 26 barriers were identified from a comprehensive literature review. Through a questionnaire survey with 43 professionals in Ghana, the results first indicated that 20 out of the 26 barriers were critical barriers to GBTs adoption, with the most critical barriers being higher costs of GBTs, lack of government incentives, and lack of financing schemes (e.g., bank 685 loans). Moreover, a comparative analysis pointed out that while the most critical barriers to GBTs adoption in the developing country of Ghana mostly vary from those in the developed countries of the US, Canada, and Australia, higher costs of GBTs remains a top barrier in all the countries. Furthermore, factor analysis revealed that the underlying grouped barriers for the 20 critical barriers were government-related, human-related, knowledge and information related, market-related, and cost and risk-related barriers. The results also showed that the most dominant of the five underlying groups was government-related barriers. This implies that there is a need for the government to play a more active role in promoting GBTs in Ghana.